基于土地利用变化的喀斯特地区生态服务价值损益估算——以广西都安瑶族自治县为例

Estimation of ecosystem service value losses based on land use change in karst area——A case of Du'an county

以广西都安瑶族自治县1988年、1999年TM影像数据以及2005年SPOT2/4影像数据为基础,应用谢高地等关于生态系统服务价值的测算方法,分析了研究区域土地利用变化及其所引起的生态系统服务价值的变化情况。分析结果表明,17年间研究区域土地利用的变化损害了该区域生态系统的生态服务功能,使生态系统服务价值损失了约0.91亿元,说明土地利用变化影响了该地的生态系统服务功能的发挥,建议都安县调整土地利用结构,加大生态建设比重。

In order to quantitatively analyze the change of ecosystem services caused by land use change ,the economic value of ecosystem services in karst landform area during different periods is estimated with the economic value of food production that is supplied with the cropland ecosystem. The database of Chinese resource and environment spatial-temporal land use in 1988, 1999 and 2005 are used for analyzing two period TM data and a SPOT2/4 data. Over the 17 years,changes in ecosystem services value are calculated and their causes analyzed. It is shown that the use of land is not reasonable so that the ecosystem service value lost and economic development is not sustainable.